Akpenpuun, Timothy2022-01-182022-01-182021-05http://dx.doi.org/10.48198/NJPAS/19.B12https://uilspace.unilorin.edu.ng/handle/20.500.12484/7411Low yield, insect, pest and weeds competing with crops are challenges in crop production systems in Nigeria. This research was carried out to design and developed a push-type wheel operated liquid fertilizer/pesticide sprayer. The materials used for fabrication were selected based on the design assumptions, calculations and sourced locally. The sprayer was mechanically operated through the rotating shaft of the cartwheels using a slider-cranks mechanism. An accumulator was provided to create the required pressure of continuous spraying action. The sprayer possesses two tanks of 16 L each, a wheel, a coup-able stand, eight nozzles and an adjustable height depending on the crop height. The sprayer can cover 4.8 hectares per day, effective field capacity of 1.13 ha/h, theoretical field capacity of 1.24 ha/h. and field efficiency of 91%. The developed sprayer consumes less time, cost effective, high efficiency and the users will just have to pull the cart and the whole mechanism will be operated with ease.Slider-crank mechanismDesignNozzleField capacityEfficiencyArticle